Stair tread clip



FIG. 1 is a front view showing my new design for a stair tread clip;

FIG. 2 is a rear view thereof;

FIG. 3 is a top view thereof; and,

FIG. 4 is a left side view thereof; the right side view is a mirror image.

The broken lines represent unclaimed portions of the design. 

CLAIM I claim the ornamental design for a stair tread clip, as shown and described. 